Clamshell Hinge Resistance Control for Easier One-Hand Opening

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Solution Overview

Problem

Electronic devices with clamshell configurations face challenges in providing a balance between protecting vulnerable components and ease of opening, as increasing opening resistance to protect components makes it difficult for users to open the device.

Innovation Solution

The device dynamically adjusts opening resistance based on the force applied by the user, using sensors to detect the opening force and reduce resistance when necessary, allowing for easier opening while maintaining protection through mechanisms like hinges and magnetic closure systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If opening resistance is increased to protect vulnerable components, then component protection is improved, but ease of opening deteriorates

Engineering Contradiction:
Improvecomponent protectionVSAvoidease of opening
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The hinge resistance is made dynamically adjustable rather than fixed. The system transitions from a static high-resistance state (for protection) to a dynamically controlled resistance level that can be reduced when opening is detected, resolving the contradiction between protection and ease of opening

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Sensors provide feedback about device state and applied forces to the control system. This feedback loop enables the system to detect when a user intends to open the device and automatically adjust the hinge resistance accordingly, allowing both strong protection and easy opening

Inventive Principle:
Principle #23Feedback

2Stability of the object's composition

If strong hinge resistance is applied to hold display in selected position, then position stability is improved, but user effort increases

Engineering Contradiction:
Improveposition stabilityVSAvoiduser effort
Core Design Contradiction:
Stability of the object's compositionVSForce

Solution Approach 1:

The hinge resistance is dynamically adjusted based on operational context. During opening/closing operations, resistance is reduced to minimize user effort. During normal use, resistance is increased to maintain position stability, thus resolving the contradiction between stability and user effort

Inventive Principle:
Principle #15Dynamics

3Stability of the object's composition

If resistive force is increased to prevent device sliding, then device stability is improved, but opening ease deteriorates

Engineering Contradiction:
Improvedevice stabilityVSAvoidopening ease
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The resistive force is made dynamic rather than static. The system automatically reduces resistance during opening operations (detected via sensors) while maintaining high resistance during normal use to prevent sliding, resolving the contradiction between stability and opening ease

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution enables users to open the device with reduced effort, preventing sliding and improving the user experience by dynamically adjusting the opening resistance, allowing for one-handed operation and reduced wear on the device's surface contacts.

Implementation Method 1

the resistive force is applied by at least one of: a hinge of the electronic device, and magnetic elements of the electronic device

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS11836013B2Systems and methods for dynamically adjusting opening force
Publication Date: 2023.12.05 MICROSOFT TECHNOLOGY LICENSING LLC
  • US11836013B2 patent drawing
  • US11836013B2 patent drawing
  • US11836013B2 patent drawing

AI summary

A method of controlling opening resistance in an electronic device includes maintaining the electronic device in a closed state via a resistive force, wherein the resistive force is applied by at least one of: a hinge of the electronic device, and magnets of the electronic device. The method further includes using a sensor on an underside of the electronic device to detect a force applied to a first portion of the electronic device and determining that the force corresponds to a user initiating opening of the electronic device. In accordance with the determination, the method further includes reducing the resistive force to assist the user in opening the electronic device.